Hi I saw some brother max ones at bumps to babes. I used the freezing tray from boots but I think it's only available in the uk. I find it useful when I freeze cubes and transfer them to freezer bags or larger containers and I can choose how many cubes to feed at each time. Also, it's useful for combining different items for a different taste. Eg: apple with pear, apple with apricot, spinach with pumpkin, pumpkin with carrot, etc... Have fun!!!